There are physiological and pathological factors for hair growth on the areola. First of all, physiological factors are normal because there are hair follicle cells on the areola. This physiological factor does not require special treatment. Secondly, in terms of pathological factors, if there are only a few one or two, it may be due to the overgrowth of hair follicles in the patient’s body due to their activation. If the number is relatively large, it may be due to polycystic ovary syndrome, which is caused by enlarged ovaries and excessive secretion of androgens resulting in hirsutism. Finally, it may also be caused by the patient’s recent endocrine disorder, and pathological factors can best be treated. So when there is long hair on the areola and more, or with other abnormal symptoms, it is best to go to the hospital in time for further examination.